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365GT4 400 400i 412
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412 gearbox:
Fitted with a 3-speed GM automatic gearbox. A 5-speed manual gearbox and Borg & Beck dry twin-plate clutch was available on request. Rear axle fitted with a ZF limited-slip differential.

Gear ratios - automatic gearbox
 First 2.4818:1 8.4793:1
 Second 1.4815:1 5.0618:1
 Third 1.0000:1 3.4167:1
 Reverse 2.0769:1 6.5353:1
 Final drive 3.4167:1 12:41

Gear ratios - manual gearbox
 First 2.8370:1 12.2000:1
 Second 1.7060:1 7.3360:1
 Third 1.2540:1 5.3920:1
 Fourth 1.0000:1 4.300:1
 Fifth 0.7948:1 3.4178:1
 Reverse 2.314:1 9.9500:1
 Final drive 4.3000:1 10:43